Chris Maddern is a product and technology builder who serves as CTO at OpenSea, the digital asset platform for buying, selling, and minting NFTs across multiple blockchains. Chris Maddern's Twitter Score is 385 out of 1000 (an Excellent rating) as of July 2026, ranking #658 (top 0.5%) among 389,201 tracked accounts.
Chris Maddern has previously worked at Rally, Button, Venmo, and LinksDAO, as well as Corkbin. OpenSea was co-founded by Devin Finzer and Alex Atallah, and raised a Series C round of $300 million led by Paradigm and Coatue Management at a $13.3 billion valuation, per public reporting. In his current role, Chris Maddern focuses on agents, mobile, and onchain development.
Chris Maddern has been part of notable product activity at OpenSea, including the launch of OS2 in 2025, a platform overhaul supporting token and NFT trading across multiple blockchains with marketplace aggregation, cross-chain purchasing, lower fees, and a rewards program called Voyages. OpenSea also acquired Rally, a Web3 crypto wallet and NFT trading application, in July 2025. Chris Maddern has 47,830 followers as of July 2026 and has published 49,031 posts. Chris Maddern has been mentioned by 180 accounts a total of 399 times.
Who follows Chris Maddern on X?
The accounts that follow Chris Maddern include 964 founders, 184 angel investors, 939 influencers and 30 VCs, among them Chris Dixon, Toly, jesse.base.eth, Solana, Stani and Mike Dudas.